131545687 has 8 divisors (see below), whose sum is σ = 161902496. Its totient is φ = 104080032.

The previous prime is 131545663. The next prime is 131545691. The reversal of 131545687 is 786545131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131545687 - 2⁷ = 131545559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131545627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 722688 + ... + 722869.

It is an arithmetic number, because the mean of its divisors is an integer number (20237812).

Almost surely, 2^131545687 is an apocalyptic number.

131545687 is a deficient number, since it is larger than the sum of its proper divisors (30356809).

131545687 is a wasteful number, since it uses less digits than its factorization.

131545687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445577.

The product of its digits is 100800, while the sum is 40.

The square root of 131545687 is about 11469.3368160500. The cubic root of 131545687 is about 508.5795241654.

The spelling of 131545687 in words is "one hundred thirty-one million, five hundred forty-five thousand, six hundred eighty-seven".